KB2991: Stopping all Veeam activities
https://www.veeam.com/kb299126.08.2019 · Stop all services that begin with the word "Veeam": There may be more services starting with the word Veeam than are shown here. Ensure that services are not running before proceeding (Press F5 to refresh the view status): Repeat steps 3 and 4 for all the Veeam Proxies and Repositories.
KB1727: How to forcibly stop jobs that are stuck in ...
https://www.veeam.com/kb172701.03.2013 · Close the Veeam Backup & Replication console. Stop all services that begin with the word Veeam. Open the Task Manager on the Veeam Server and kill all VeeamAgent.exe processes. Note: Some VeeamAgent.exe process will be located on Source Proxies and Windows Repositories that are not the Veeam Server. Wait 5-10 minutes for the tasks to timeout ...